3. Technology is comparatively reliable;Do not involve in the original car agreement.,technology risks is fewer and safer comparatively;

4. Remain all functions of the original host after upgrading. If there are some wrong with navigation,it will not have influence on the original car function;

5. Convenient After-sale service;Point-to-point reparation,do not involve in original car accessories,it is more simple, fewer risks,safer and more reliable than dedicated machine;

6. Real nondestructive installation of Original car type, remain all functions of the original host after upgrading and tackle the problem of the new “Three Parks of Policy” and 4S that do not support warranty;